baber/WOPTO huggingface dataset:
Patent CA-2055392-C (CA)
Title: Strobe circuit utilizing optocoupler in dc-to-dc converter
Inventor: KOSICH JOSEPH
IPC: H02M3/156
Filed: 1991-11-13
Granted: 2000-01-04
Abstract: A strobe alarm circuit utilising an optocoupler in the DC-to-DC converter portion of the circuit for repetitively connecting and disconnecting an energy-storing inductor across a DC power source. The light-emitting diode portion of the optocoupler is connected in parallel with a resistor connected in series with the inductor for continuously monitoring the current flowing through the inductor; when the inductor current has attained a particular value at which the voltage drop across the resistor is sufficient to turn on the LED, the switch portion of the optocoupler is turned on and disconnects the inductor from across the source. After a short interval determined by the parameters of the optocoupler and associated circuitry. the cycle is repeated.
Patent CA-2060524-C (CA)
Inventor: KISER THOMAS E
IPC: F24F11/02
Filed: 1992-02-03
Granted: 2004-03-30
Abstract: A system for maintaining atmospheric conditions in an enclosed building within desired parameters and rapidly evacuating abnormally high amounts of airborne pollutants from localized areas of the building is disclosed.      Conditioned air, including sufficient outside air, is continuously admitted to the building interior from a plurality of air handling units disposed about the building to maintain the interior of the building under a slight positive pressure throughout. The air handling units, at least in areas where concentrations of airborne contaminants are generated include, in addition to outside air and building air inlets and a building air outlet, an outlet exhausting to the outside. Sensors and/or scanning units located throughout the building monitor various atmospheric conditions and transmit signals indicative of the noted conditions to a central computer. The computer, in turn, compares the observed conditions to predetermined desired conditions and controls the air handling units as necessary to maintain the conditions within desired parameters. When an abnormal airborne pollutant condition is noted in a particular area, the computer initiates a sequence of steps to place the pertinent air handling unit or units in an evacuation or dump made. The outside air inlet and building air outlets are closed and the building return air inlet and exhaust outlet are opened so that contaminated air is withdrawn from the region and exhausted to the outside. When the pollutant level in the area again falls within predetermined parameters, the air handling unit or units return to normal operation.
Patent CA-2060745-C (CA)
Title: Novel formulations of crop protection agents
Inventor: HEINRICH RUDOLF
IPC: A01P3/00
Filed: 1992-02-05
Granted: 2002-11-26
Abstract: The invention relates to water-emulsifiable granules of crop protection agents composed of the pesticidal active substance in liquid or dissolved form and an at least partially water-soluble shell-forming structural material, to the use of these granules as novel, advantageous formulations of crop protection agents, and to processes for their preparation. It furthermore relates to the general use of polyvinyl alcohols as shell-forming structural materials in the preparation of water-emulsifiable granules which contain organic compounds dissolved in a high-boiling solvent or solvent mixture.
Patent CA-2063532-C (CA)
Inventor: GREEN DAVID EUGENE
IPC: D06N5/00
Filed: 1992-03-19
Granted: 2001-12-18
Abstract: Method to produce a roofing membrane for use in the construction of roofs which comprises mating of at least two plys of fiberglass scrim fabric to form a substrate for the roofing membrane. At least one of the plys of the substrate is a triaxially wound scrim fabric to provide additional strength to a standard open mesh rectangular formed scrim fabric.
Patent CA-2069825-C (CA)
Title: Process for obtaining cold dense asphalt coating mixes
Inventor: CLARAC ANDRE
IPC: C08L95/00
Filed: 1992-05-28
Granted: 2000-07-11
Abstract: The invention relates to a method for producing cold dense-graded bituminous mixes consisting of coarse elements (GG) and fine elements (GF), which is characterised by a double coating according to which there are added, in succession, into a mixer (2") : the coarse elements (GG), a first emulsion (EBPF), the fine elements (GF) and a second emulsion (EBP), and everything is mixed for a sufficient length of time to obtain a homogeneous mixture (7') which can be stored for the necessary period. <IMAGE>
Patent CA-2071025-C (CA)
Title: Semiconductor laser
Inventor: YOSHIDA ICHIRO
IPC: H01S5/323
Filed: 1992-06-11
Granted: 1999-08-10
Abstract: Abstract of the Disclosure A p-clad layer constituting the semiconductor laser device according to this invention includes an inner clad area near to an active layer, and an outer clad area remote from the active layer, the outer clad area having a narrower bandgap than that of the inner clad area, the thickness and the composition of the inner clad area being so set that beams do not substantially exude from the active layer to the outer clad area.  A multi-quantum barrier structure is provided between the active layer and the p-clad layer.          At least one of barrier layers of the multi-quantum barrier structure is formed of a material which applies tensile stress thereto, and at least one of well layers provided between one of the barrier layers and its adjacent one is formed of a material which applies contraction stress thereto, whereby an average lattice constant of the multi-quantum barrier agrees with that of a substrate.  The use of a material in the barrier layers allows the bandgap to be sufficiently wide.          Consequently even in comparatively high-temperature environments carriers, especially electrons, can be prevented from overflowing from the active layer to the clad layers, and no deterioration of the characteristics takes place.
Patent CA-2074307-C (CA)
Title: Rope guide
Inventor: SELL LESLIE J
IPC: B66D1/36
Filed: 1992-07-21
Granted: 1995-12-12
Abstract: A rope hoist rope guide is disclosed which is readily mounted on a drum by a unique split ring construction and includes unique rollers which cooperate with the grooves in the drum to position the guide ring and accurately deploy the rope to appropriately lay the rope in the drum grooves regardless of side forces applied.
Patent CA-2075095-C (CA)
Title: Viscoelastic dentifrice composition
Inventor: PRENCIPE MICHAEL
IPC: A61Q11/00
Filed: 1992-07-31
Granted: 2002-07-23
Abstract: A toothpaste or dental gel composition containing an amount of a synthetic linearly viscoelastic cross-linked polymeric thickening agent, especially a cross-linked methyl vinyl ether/maleic anhydride copolymer, effective to render the composition linearly viscoelastic, and a method of promoting oral hygiene by applying an effective amount of the composition to dental surface.
Patent CA-2076027-C (CA)
Title: Functionalized multisequenced macromonomers and their production method
Inventor: GAILLARD PATRICE
IPC: C08F290/04
Filed: 1991-02-12
Granted: 2000-07-18
Abstract: A functionalized multisequenced macromonomer of formula (I) or formula (II), wherein each of blocks A, B and C represents a sequence of a monomer selected from the classes of acrylic, vinylaromatic, methacrylic, diene-containing, vinylpyridine, vinylpyrrolidone, alkylene oxide, lactam, lactone and maleimide monomers, with the proviso that either one or both of blocks A and C is selected from a class different from B, and that at least one of blocks A, B or C is a (meth)acrylic sequence; m, n, and p are integers representing the number of monomer structural units in the sequence in question, e.g.: 3 Í n Í 1000, 0 Í m Í 1000 and 0 Í p Í 1000, with the proviso that m and p are both 0 at the same time; and F is a grouping which terminated by 0-, OH or an alpha,beta-ethylene unsaturation.
Patent CA-2085292-C (CA)
Title: Enzyme of use in chitosan hydrolysis
Inventor: BRZEZINSKI RYSZARD
IPC: C12N15/56
Filed: 1992-12-14
Granted: 2000-02-15
Abstract: The present invention relates to a naturally occuring, isolated and characterized microorganism producing hydrolase enzyme, specifically, chitosanase; chitosanase isolated thereof; the nucleic acid sequence of the portion of the gene encoding this chitosanase; complete amino acid sequence of this chitosanase; hybrid plasmids containing the related gene; host microorganisms transformed with the plasmids; recombinant microorganisms overexpressing the enzyme; and to enzymatic treatment of chitosan with the aforementioned enzyme resulting in molecular weight decrease, viscosity decrease and increase of solubility of chitosan in water.
Patent CA-2095726-C (CA)
Title: A gel-forming liquid dietary fibre composition
Inventor: TOMLIN JANET
IPC: A23L29/262
Filed: 1991-10-30
Granted: 2003-12-16
Abstract: A dietary fibre composition comprising a water-soluble, nonionic cellulose ether having a cloud point not higher than 35 °C in combination with a charged surfactant and optional additives in water, the ratio of surfactant to cellulose ether being 1:5 to 1:25 by weight, is a liquid solution at room temperature and a gel in the gastrointestinal tract at body temperature. Said dietary fibre composition can be used as a bulk laxative and also as a slimming aid.
Patent CA-2098495-C (CA)
Title: 1,4-benzothiazepine derivatives
Inventor: OOSAWA TATSUSHI
IPC: A61K31/55
Filed: 1991-12-27
Granted: 1999-11-30
Abstract: [Object]      An object of the invention is to provide compounds having a myocardial KD (Kinetic cell death)-inhibiting effect without being accompanied by a cardiodepressant effect. [Construction]      A 1,4-benzothiazepine derivative represented by the following Formula [I]:    wherein each of substituent groups is defined as follows: R represents H or a C1 - C3 lower alkoxy group; X represents O or H2; n represents 1 or 2; R1 represents H, a substituted phenyl group wherein the substituent group is OH or a C1-C3 lower alkoxy group,   a C1 - C3 lower alkoxy group,   wherein R2 represents a C1 - C3 aryl group, and ph represents a phenyl group, or a pharmaceutically acceptable salt thereof.
Patent CA-2098969-C (CA)
Title: Microbiological method for disposing of organic waste materials
Inventor: HIGA TERUO
IPC: C12S9/00
Filed: 1993-06-22
Granted: 1997-11-04
Abstract: Disclosed herein are a method for disposing of organic waste materials using microorganisms; methods for accelerating the growth of plants, for destroying or repelling insect pests, for improving the soil, of deodorization and for improving water quality, using the waste materials processed by the disposal method; and compositions for use in these methods. The microbiological method for disposing of an organic waste material comprises the step of bringing (i) an organic waste material into contact with (ii) at least 5 species of microorganisms, each being selected from each of 5 groups consisting of actinomycetes, phototrophic bacteria, lactic acid bacteria, mold fungi and yeast, the microorganisms (a) being acid-fast, (b) capable of producing lactic acid, (c) producing no butyric acid, (d) being non-pathogenic and (e) having an antagonistic value of 50 or more.
Patent CA-2100027-C (CA)
Title: Method of producing 5'-nucleotide
Inventor: HAZE AKIRA
IPC: C07H19/04
Filed: 1993-07-07
Granted: 2003-10-07
Abstract: A method of producing 5'-nucleotide, which comprises maintaining a nucleoside suspension in an organic solvent at a temperature not lower than about 20°C, and then subjecting the resultant suspension to a phosphorylatipon of the nucleoside(s).        According to the present invention, 5'-nucleotide can be produced from a nucleoside at high purity and high yield in a shortened reaction time, and impurity removal in the nucleotide purification process is easily accomplished.
Patent CA-2103908-C (CA)
Inventor: BALMUTH EDWARD S
IPC: C22C21/16
Filed: 1992-02-18
Granted: 2002-06-18
Abstract: Aluminum based alloy primarily for use in aircraft and aerospace components consists essentially of the composition: 2.60 to 3.30 weight percent copper, 0.0 to 0.50 weight percent manganese, 1.30 to 1.65 weight percent lithium, 0.0 to 1.8 percent magnesium and from 0.0 to 1.5 weight percent of grain refinement elements selected from the group consisting of zirconium, and chromium. Up to about 0.5 wt.% zinc and up to about 1.5 wt.% titanium may also be present. Minor impurities may also be present.      These alloys exhibit an improved combination of characteristics including low density, high strength, high corrosion resistance and good fracture toughness.
Patent CA-2107223-C (CA)
Title: Crystalline tiagabine hydrochloride monohydrate, its preparation and use
Inventor: PETERSEN HENNING
IPC: C07D409/14
Filed: 1992-03-23
Granted: 2005-02-15
Abstract: The invention provides crystalline hydrochloride monohydrate R-isomer of N-(4,4-di(3-methylthien-2-yl)-but-3-enyl)nipecotic acid. (See formula I) with the generic name Tiagabine hydrochloride, process for its preparation, compositions containing the same and its therapeutic use as anti-epileptic agent.
Patent CA-2108254-C (CA)
Title: Coding process
Inventor: HERPEL CARSTEN
IPC: H04N19/80
Filed: 1992-04-04
Granted: 2002-01-29
Abstract: With the coding of picture signals, motion vectors are often determined for blocks of picture elements. A method is described in EP 0 414 113 which explains how a zoom aid pan vector can be generated for always a complete picture from an array of motion vectors for blocks of picture elements. With a format conversion of picture signals which are sub-sampled at least vertically prior to the coding, motion parameters valied for always a complete picture are used in order to gain a maximum local resolution after the sub-sampling. Only the remaining, incompletely motion-compensated parts of the picture are detected by a simple alteration detector and vertically filtered in the field.
Patent CA-2112487-C (CA)
Title: Method and compositions for treating emesis, nausea and other disorders using optically pure r(+) ondansetron
Inventor: YOUNG JAMES W
IPC: A61K31/4178
Filed: 1992-06-25
Granted: 2003-04-15
Abstract: Methods and compositions are disclosed utilizing the optically pure R(+) isomer of ondansetron. This compound is a po-tent drug for the treatment of nausea and vomiting associated with chemotherapy and radiation therapy, while avoiding the con-comitant liability of adverse effects associated with the racemic mixture of ondansetron. The R(+) isomer of ondansetron is also useful for the treatment of behavioral disorders such as mood anxiety and schizophrenia, and such other conditions as may be related to R(+) ondansetron's activity as a competitive antagonist of serotonin receptor subtype 5-HT3 such as disorders of gas-trointestinal motility, depression, migraine, and as an aid for alcohol withdrawal, nicotine withdrawal, and drug (benzodi-azepine et al.) withdrawal, without the concomitant liability of adverse effects associated with the racemic mixture of on-dansetron. Furthermore, the R(+) isomer of ondansetron is also useful for the treatment of cognitive disorders such as dementia or age-associated memory impairment, while avoiding the concomitant liability of adverse effects associated with the racemic mixture of ondansetron.
Patent CA-2114492-C (CA)
Title: Aqueous electrochemical preparation of insertion compounds and use in non-aqueous rechargeable batteries
Inventor: LI WU
IPC: H01M4/131
Filed: 1994-01-28
Granted: 2000-09-05
Abstract: Insertion compounds that are not stable in pure water can be prepared by an aqueous electrochemical method. The pH of the electrolyte and/or the concentration of ions of the inserted species must be sufficiently high to provide stability for the product compound. The method is useful for further lithiation of conventional lithium ion battery cathode materials.
Patent CA-2116167-C (CA)
Title: One-component coating compositions containing oxime- or lactam-blocked polyisocyanates which have improved resistance to yellowing
Inventor: SHAFFER MYRON W
IPC: C09D175/00
Filed: 1994-02-22
Granted: 2007-05-15
Abstract: The present invention relates to a blocked poly--isocyanate which is the reaction product of a polyisocyanate with i) 60 to 99.9 equivalent percent, based on the equivalents of isocyanate groups of the polyisocyanate prior to blocking, of an oxime or lactam blocking agent for isocyanate groups and ii) 0.1 to 40 equivalent percent, based on the equivalents of isocyanate groups of the polyisocyanate prior to blocking, of hydrazine and/or a compound which is soluble in either the polyisocyanate, the blocking agent or an optional organic solvent for the polyisocyanate and contains the group, H(R)N-NR-CO-, wherein the carbonyl group is bound to carbon or nitrogen and R represents hydrogen or an optionally substituted hydrocarbon radical.   The present invention also relates to a one-component coating composition containing this blocked polyisocyanate and a compound containing at least two isocyanate-reactive groups and to coated substrates prepared from this one-component coating composition which additionally contains an acid.
Patent CA-2117158-C (CA)
Inventor: SCHULZ ROBERT
IPC: C22C19/00
Filed: 1994-03-07
Granted: 1999-02-16
Abstract: L'invention vise une poudre d'un alliage de Ni avec un autre métal choisi dans le groupe constitué par Mg La, Be et Li laquelle se présente sous la forme d'agglomérats de cristallites de taille inférieure à 100 nm et dont la str ucture cristalline permet une absorption d'hydrogène. La poudre en question qui est de préférence obtenue par broyage mécanique peut être constituée de cristallites de LaNi5 ou de cristallites d'alliages à base de Ni et de Be ou de Li ayant une tai lle inférieure à 100 nm. Préférablement, cette poudre est constituée de cristallites de formule Mg2-xNi1+x (x étant compris entre -0,3 et +0,3), ces cristallites ayant une taille inférieure à 100 nm et de préférence inférieure à 30 nm. L'invention vise égalem ent l'usage de cette poudre nanocristalline pour le stockage et/ou le transport de l'hydrogène. Il a en effet été découvert que ces poudres nanocristallines à base de nickel ne requiert aucun sinon un simple traitement d'activation à basse température. Il a également été découvert que la cinétique d'absorption et de diffusion de l'hydrogène est beaucoup plus rapide. Ceci peut notamment s'expliqu er par le fait que la poudre nanocristalline possède une très grande quantité de jo ints de gain.
Patent CA-2119181-C (CA)
Title: Friction fitted contour skirt for mattress pads and covers
Inventor: BYFIELD PAUL CHARLES
IPC: A47C21/06
Filed: 1994-03-16
Granted: 1998-06-16
Abstract: A contour skirt for mattress pads or covers and the like is provided with a high friction inner surface to hold the pad or sheet firmly in place on a mattress.  Foam material such as polyurethane may be stitched to the inner surface of the skirt in a pattern that produces "puffs" of foam  that  act as  "treads"  to  grip  the  mattress. Alternatively,  high friction polymeric material such as latex or neoprene may be bonded in strips to the inner surface of the skirt.
Patent CA-2122257-C (CA)
Title: Preparation of substantially dust-free tetrayhdro-3,5- dimethyl-1,3,5-thiadiazine-2-thione granules
Inventor: APPLER HEINZ
IPC: C07D285/34
Filed: 1992-12-15
Granted: 2003-11-25
Abstract: Described is a method of producing tetrahydro-3,5-dimethyl-1,3,5-thiadiazin-2-thion powder (I) substantially free of dust fines by reacting methylamine (II) with carbon disulphide (III) and formaldehyde (IV) or by reacting the methylammonium salt of N-methyldithiocarbamic acid (V) with formaldehyde (IV), characterized in that the reaction is carried out in the presence of at least one diaminoalkylene of the formula (VI): R1-NH-A-NH-R2, in which R2 and R2, independently of each other, are hy-drogen or an alkyl group and A is an optionally substituted 1,2-ethylene, 1,3-propylene or 1,4-butylene bridge.
Patent CA-2122843-C (CA)
Title: System for smart card funds refill
Inventor: BAKER WALTER J
IPC: G07F17/26
Filed: 1994-05-04
Granted: 1997-01-14
Abstract: A system for providing items of value, charging the items to a smart card, and for recharging the smart card. The system includes a station for providing the items of value, which may be postal services, and debiting the cost of the items to a smart card; the smart card being charged with funds equivalent data.  The station also communicates with a Data Center for recharging the smart card.  Users of the system communicate with the data center to request recharge of a particular smart card and in response to an authorized request the data center generates an encrypted authorization message which includes an identification number, the amount of recharge requested, and control data which preferably includes a control sum formed by adding the amounts stored in a descending register, which stores the amount available on the smart card, and an ascending register which stores the total of the amounts by which the card has been charged since initialization.  Thus, the authorization message may be used only once.  From time-to-time the Data Center transmits authorization messages to each station on the system.  When a particular smart card for which an authorization message has been received is connected to a station, the smart card compares the control data with the control data stored on the smart card and if there is a match updates the funds equivalent data in the descending register of the smart card.  To provide security against transmission of false authorization messages to a station, the authorization messages are encrypted, preferably using a public key encryption system.
Patent CA-2125354-C (CA)
Inventor: FARRARA ROBERT N
IPC: E21B17/10
Filed: 1994-06-07
Granted: 1998-01-20
Abstract: A guard device for use with a drop pipe in a well casing includes a pair of similar guard sections each being formed of a plastic material.  Each section includes inner and outer arcuate members interconnected by ribs and plates.  The inner arcuate member of each section engages the drop pipe and the outer arcuate member has tabs which engage the well casing to enter the drop pipe.  A locking member on each section interlocks with a lock engaging member on the other section. Vertical passages through the sections accommodate electrical conductors, safety ropes and similar components to thereby minimize damage to these components.
Patent CA-2125389-C (CA)
Title: A method of effecting random access in a mobile radio system
Inventor: DAHLIN JAN ERIK AKE STEINAR
IPC: H04W72/14
Filed: 1993-10-12
Granted: 2002-02-05
Abstract: A method for random access in a time divided mobile radio system, for instance an FDMA/TDMA system, which includes digital traffic channels and control channels which are organized so that four traffic channels and two control channels are included in a TDMA-frame. A base station transmits continuously flags in the time slots of the control channels. A mobile station desiring access to the system responds by sending a first message word in the time slot indicated by the base station in a first flag. When the mobile station wishes to transmit several message words, the base station reserves one or more time slots to this end by transmitting the first flag, although this flag now states that these time slots are busy for other mobile stations. Furthermore, the base station transmits a flag which states whether or not a message word has been received from the mobile station. The base station can transmit a further flag, which denotes that a given time slot has been reserved for a given mobile station from the very beginning of an access procedure and cannot therefore be used by any other mobile station.